How to Wire a NEMA 6-50 Plug | eHow A NEMA 6-50 plug has two straight hot prongs, running parallel to each other, and a horseshoe-shaped ground prong. The hot prongs on the 6-50 have different widths, with the large prong on the right. A NEMA 6-50 plug connects to a 250-volt 50-amp electrical circuit. How to convert 4-prong (NEMA 14-50) 220 outlet to 3-prong Sep 29, 2015I bought a welder recently and had to convert my 4 prong 220 volt outlet to a 3 prong which is more universal for 220 welders. Please like and subscribe so I Related searches for l14 30 to 6 50 wiring diagram l14 30 plug wiring diagraml14 30 wiringwiring l14 30 to generatorl14 30 plug wiringl14 30r wiring diagramwiring l14 30 receptaclenema l14 30 wiringl14 20r wiring diagram